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-rw-r--r--arch/m68knommu/kernel/time.c40
1 files changed, 18 insertions, 22 deletions
diff --git a/arch/m68knommu/kernel/time.c b/arch/m68knommu/kernel/time.c
index 0ccfb2ad6380..d182b2f72211 100644
--- a/arch/m68knommu/kernel/time.c
+++ b/arch/m68knommu/kernel/time.c
@@ -33,14 +33,13 @@ static inline int set_rtc_mmss(unsigned long nowtime)
33 return -1; 33 return -1;
34} 34}
35 35
36#ifndef CONFIG_GENERIC_CLOCKEVENTS
36/* 37/*
37 * timer_interrupt() needs to keep up the real-time clock, 38 * timer_interrupt() needs to keep up the real-time clock,
38 * as well as call the "do_timer()" routine every clocktick 39 * as well as call the "do_timer()" routine every clocktick
39 */ 40 */
40irqreturn_t arch_timer_interrupt(int irq, void *dummy) 41irqreturn_t arch_timer_interrupt(int irq, void *dummy)
41{ 42{
42 /* last time the cmos clock got updated */
43 static long last_rtc_update=0;
44 43
45 if (current->pid) 44 if (current->pid)
46 profile_tick(CPU_PROFILING); 45 profile_tick(CPU_PROFILING);
@@ -49,21 +48,6 @@ irqreturn_t arch_timer_interrupt(int irq, void *dummy)
49 48
50 do_timer(1); 49 do_timer(1);
51 50
52 /*
53 * If we have an externally synchronized Linux clock, then update
54 * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
55 * called as close as possible to 500 ms before the new second starts.
56 */
57 if (ntp_synced() &&
58 xtime.tv_sec > last_rtc_update + 660 &&
59 (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
60 (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
61 if (set_rtc_mmss(xtime.tv_sec) == 0)
62 last_rtc_update = xtime.tv_sec;
63 else
64 last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */
65 }
66
67 write_sequnlock(&xtime_lock); 51 write_sequnlock(&xtime_lock);
68 52
69#ifndef CONFIG_SMP 53#ifndef CONFIG_SMP
@@ -71,8 +55,9 @@ irqreturn_t arch_timer_interrupt(int irq, void *dummy)
71#endif 55#endif
72 return(IRQ_HANDLED); 56 return(IRQ_HANDLED);
73} 57}
58#endif
74 59
75void time_init(void) 60static unsigned long read_rtc_mmss(void)
76{ 61{
77 unsigned int year, mon, day, hour, min, sec; 62 unsigned int year, mon, day, hour, min, sec;
78 63
@@ -83,10 +68,21 @@ void time_init(void)
83 68
84 if ((year += 1900) < 1970) 69 if ((year += 1900) < 1970)
85 year += 100; 70 year += 100;
86 xtime.tv_sec = mktime(year, mon, day, hour, min, sec);
87 xtime.tv_nsec = 0;
88 wall_to_monotonic.tv_sec = -xtime.tv_sec;
89 71
90 hw_timer_init(); 72 return mktime(year, mon, day, hour, min, sec);;
73}
74
75unsigned long read_persistent_clock(void)
76{
77 return read_rtc_mmss();
91} 78}
92 79
80int update_persistent_clock(struct timespec now)
81{
82 return set_rtc_mmss(now.tv_sec);
83}
84
85void time_init(void)
86{
87 hw_timer_init();
88}